/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:15,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:15,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:15,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:15,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:15,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:15,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:15,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:15,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:15,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:15,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:15,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:15,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:15,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:15,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:15,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:15,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:15,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:15,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:15,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:15,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:15,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:15,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:15,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:15,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:15,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:15,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:15,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:15,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:17:15,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:15,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:15,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:15,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:15,254 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:15,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:15,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:15,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:15,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:15,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:15,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:15,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:15,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:15,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:15,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:15,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:15,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:15,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:15,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:15,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:15,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:15,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:15,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:15,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:15,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:15,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:15,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:15,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:15,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:15,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:15,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:15,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:15,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:15,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:15,621 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:15,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-22 16:17:15,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4846a8d13/6d2d8325e3914767960cda39e7d14f99/FLAG38cb3bdf3 [2020-08-22 16:17:16,140 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:16,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-22 16:17:16,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4846a8d13/6d2d8325e3914767960cda39e7d14f99/FLAG38cb3bdf3 [2020-08-22 16:17:16,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4846a8d13/6d2d8325e3914767960cda39e7d14f99 [2020-08-22 16:17:16,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:16,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:16,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:16,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:16,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:16,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16, skipping insertion in model container [2020-08-22 16:17:16,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:16,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:16,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:16,752 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:16,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:16,815 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:16,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16 WrapperNode [2020-08-22 16:17:16,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:16,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:16,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:16,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:16,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... [2020-08-22 16:17:16,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:16,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:16,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:16,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:16,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 16:17:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-08-22 16:17:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:17,531 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:17,531 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-08-22 16:17:17,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:17 BoogieIcfgContainer [2020-08-22 16:17:17,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:17,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:17,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:17,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:17,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:16" (1/3) ... [2020-08-22 16:17:17,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ba264f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:17, skipping insertion in model container [2020-08-22 16:17:17,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:16" (2/3) ... [2020-08-22 16:17:17,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ba264f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:17, skipping insertion in model container [2020-08-22 16:17:17,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:17" (3/3) ... [2020-08-22 16:17:17,543 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-08-22 16:17:17,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:17,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:17,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:17,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:17,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:17,597 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:17,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:17,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:17,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:17,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:17,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-08-22 16:17:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:17:17,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:17,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:17,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-08-22 16:17:17,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:17,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525532305] [2020-08-22 16:17:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 16:17:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:17,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525532305] [2020-08-22 16:17:17,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:17,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:17,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687981854] [2020-08-22 16:17:17,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:17,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:17,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:17,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:17,882 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-08-22 16:17:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:18,157 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-08-22 16:17:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:18,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 16:17:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:18,170 INFO L225 Difference]: With dead ends: 108 [2020-08-22 16:17:18,170 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 16:17:18,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:17:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 16:17:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-22 16:17:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 16:17:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-22 16:17:18,231 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-08-22 16:17:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:18,231 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-22 16:17:18,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-22 16:17:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:17:18,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:18,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:18,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:18,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:18,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-08-22 16:17:18,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:18,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369483138] [2020-08-22 16:17:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:17:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:18,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369483138] [2020-08-22 16:17:18,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:18,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:17:18,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306240707] [2020-08-22 16:17:18,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:17:18,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:18,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:17:18,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:17:18,426 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-08-22 16:17:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:18,633 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-08-22 16:17:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:17:18,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 16:17:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:18,636 INFO L225 Difference]: With dead ends: 57 [2020-08-22 16:17:18,636 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 16:17:18,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:17:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 16:17:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-22 16:17:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 16:17:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-22 16:17:18,647 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-08-22 16:17:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:18,649 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-22 16:17:18,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:17:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-22 16:17:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 16:17:18,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:18,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:18,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:18,652 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:18,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-08-22 16:17:18,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:18,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961514962] [2020-08-22 16:17:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:18,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:18,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:18,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:18,749 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:18,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:17:18,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:18 BoogieIcfgContainer [2020-08-22 16:17:18,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:18,818 INFO L168 Benchmark]: Toolchain (without parser) took 2318.49 ms. Allocated memory was 142.1 MB in the beginning and 233.8 MB in the end (delta: 91.8 MB). Free memory was 101.2 MB in the beginning and 164.5 MB in the end (delta: -63.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:18,820 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:18,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.18 ms. Allocated memory is still 142.1 MB. Free memory was 101.0 MB in the beginning and 88.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:18,822 INFO L168 Benchmark]: Boogie Preprocessor took 154.95 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 88.6 MB in the beginning and 176.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:18,823 INFO L168 Benchmark]: RCFGBuilder took 563.78 ms. Allocated memory is still 200.3 MB. Free memory was 176.7 MB in the beginning and 144.5 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:18,826 INFO L168 Benchmark]: TraceAbstraction took 1277.33 ms. Allocated memory was 200.3 MB in the beginning and 233.8 MB in the end (delta: 33.6 MB). Free memory was 144.5 MB in the beginning and 164.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:18,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.18 ms. Allocated memory is still 142.1 MB. Free memory was 101.0 MB in the beginning and 88.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.95 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 88.6 MB in the beginning and 176.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 563.78 ms. Allocated memory is still 200.3 MB. Free memory was 176.7 MB in the beginning and 144.5 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1277.33 ms. Allocated memory was 200.3 MB in the beginning and 233.8 MB in the end (delta: 33.6 MB). Free memory was 144.5 MB in the beginning and 164.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; VAL [\old(one_modf)=8589934597, one_modf=1] [L116] double x = 0.0 / 0.0; [L117] double iptr; VAL [iptr={3:0}, one_modf=1] [L118] CALL, EXPR modf_double(x, &iptr) VAL [\old(x)=8589934598, iptr={3:0}, one_modf=1] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; VAL [\old(x)=8589934598, iptr={3:0}, iptr={3:0}, one_modf=1, x=8589934598] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=8589934598, i0=-1, i1=-2, iptr={3:0}, iptr={3:0}, one_modf=1, x=8589934598] [L29] COND TRUE j0 < 20 VAL [\old(x)=8589934598, i0=-1, i1=-2, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=8589934598] [L30] COND TRUE j0 < 0 VAL [\old(x)=8589934598, i0=-1, i1=-2, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=8589934598] [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; VAL [\old(x)=8589934598, \result=8589934598, i0=-1, i1=-2, iptr={3:0}, iptr={3:0}, j0=-1, one_modf=1, x=8589934598] [L118] RET, EXPR modf_double(x, &iptr) VAL [iptr={3:0}, modf_double(x, &iptr)=8589934598, one_modf=1, x=8589934598] [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) VAL [\read(iptr)=8589934591, iptr={3:0}, one_modf=1, res=8589934598, x=8589934598] [L121] CALL, EXPR isnan_double(iptr) VAL [\old(x)=8589934591, one_modf=1] [L15] return x != x; VAL [\old(x)=8589934591, \result=1, one_modf=1, x=8589934591] [L121] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=8589934591, iptr={3:0}, isnan_double(iptr)=1, one_modf=1, res=8589934598, x=8589934598] [L121] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934591, iptr={3:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, one_modf=1, res=8589934598, x=8589934598] [L121] CALL, EXPR isnan_double(res) VAL [\old(x)=8589934598, one_modf=1] [L15] return x != x; VAL [\old(x)=8589934598, \result=0, one_modf=1, x=8589934598] [L121] RET, EXPR isnan_double(res) VAL [\read(iptr)=8589934591, iptr={3:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934598, x=8589934598] [L121] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934591, iptr={3:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934598, x=8589934598] [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() VAL [iptr={3:0}, one_modf=1, res=8589934598, x=8589934598] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...